Drilling or spinning machine



(No Model.) 4 Sheets-Sheet 1.

U. 8: H. E. EBERHARDT DRILLING 0R SPINNING MACHINE.

Patented Mam.- 3, "1891.

I Illllll 7 i mun: i1 4 i, 1 5 "will Hill-Ill! n llllllllllllhllllllll (No Model.) 4 Sheets-Shet 2.

U. & H. E. EBERHARDT. DRILLING 0R SPINNING MACHINE.

No. 447,541. Patented Mar. 3,4891'.

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(No Model.)

E. WMNAMY U. & -1+1. E. E BERHARDT. DRILLING 0R SPINNING MACHINE.

Patented Mar. 3, 1891.

4 Sheets-Sheet 3;

0 0 ZZ 3 O o v I j t z awcnfors (No Model.) 4 SheetsSh'6et 4.

U. & H. E. EBERI'IAR-DT.

DRILLING OR SPINNING MACHINE.

No. 447,541. Patented Mar. 3,1891.

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ULRICH EBERHARDT AND HENRY E. EBERHARDT, OF NEWARK, NEIV JERSEY.

DRILLING OR SPINNING MACHINE.

SPECIFICATION forming part of Letters Patent No. 447,541, dated March 3, 1891.

Application filed January 4, 1890- Serial No. 335,883. (No model.)

To all whom it may concern:

Be it known that we, ULRICH EBERHARDT and HENRY E. EBERHARDT, citizens of the United States, residing at Newark, Essex county, New Jersey, have invented certain new and useful Improvements in Drilling or Spinning Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention consists in an improved apparatus for operating upon roller-casters, and may be used for either drilling the casterwheels or for riveting the caster-frames upon the spindles by spinning over the end of the spindle with the frame thereon.

The invention will be understood by reference to the annexed drawings, in which Fig ure 1 is a front elevation of the apparatus. Fig. 2 is a frontview of the spindles and feed: table fitted for drilling caster-wheels. Fig. 3 is a plan of the feed-table fitted for drilling caster-Wheels. Fig. 4 is a side elevation showing the mechanism for retracting the dogs. Fig. 5 is a side elevation of the base of the machine, showing the table-feeding devices. Fig. 6 is a plan of the machine in section on line 00 a; in Fig. 5, with the connecting-rod for the wedge removed from its crank-pin. Fig. 7 is a section 011 line y y in Fig. 5, with the fixtures removed from the ends of the crankshaft. Fig. 8 is a plan view of the top end of the frame with the driving-shaft and its boxes removed, as well as the bevel-gear upon the center spindle. Fig. 9 is a front View, similar to that in Fig. 1, of the dog-carrier. Fig. 10 is a section of the same on line .2 z in Fig. i). Fig. 11 is a view of the under side of the dog-carrier. Fig. 12 is adetached view of one of the spindle-tools with the end of the casterpivot and the hub of the caster-frame in section.

A is an upright frame; B, slides upon the front of the same; 0, a bracket movable vertically on such slides; D, a horizontal rotary feed-table pivoted upon a stud e on bracket 0; E, a driving-shaft mounted on the top of the frame and connected by bevel-gears F to a spindle I), mounted in vertical boxes G on the front of the frame. A spindle c is mounted in similar bearings at each side of spindle b and geared thereto by cog-wheels f.

In Fig. 1 the spindles are shown fitted with spindle-tools consisting each, as shown in Fig. 12, in two disks g, mounted loosely upon a pin h, fixed rigidly in a shank i, the disks rotating in opposite directions in contact with one another when pressed upon the pin h, as shown by the arrows a in Fig. 12, and being tapered toward one another to form a V- shaped groove. The caster-framesj are shown in Fig. 6 fitted in vertical holes 7o, formed in the table concentrically around the stud c. The spindles Z) c, as shown in Fig. 8, have their centers also arranged concentrically around the stud e to operate simultaneously over three of the holes is in the table.

The machine is provided with automatic devices to perform the following functions: first, to rotate the table (which is shown provided with twelve holes intermittingly to bring the holes in succession beneath the spindles; secondly, to grasp the caster-frames by means of movable dogs to hold them from rotating; thirdly, to raise the table and press the casterparts (which are to be operated upon) against the tools in the spindles b c; fourthly, to retract the caster part-s from such tools;. fifthly, to retract the dogs from the table; and, sixthly, to rotate the table and remove the caster parts which have been finished from the tools, carrying a fresh series of the caster parts beneath the tools for treat ment.

All the movements specified are effected by a crank-shaft H, mounted transversely at the back of the column and rotated by a wormwheel I and worm J. The worm-shaft J is connected by pulleys K and belt L (indicated merely by dotted lines in'Fig. 4) with the drivingshaft E.

The table feeding devices consist, first, in an arm n, fitted upon the stud e between the table and the bracket 0, a notched plate n of the same thickness as the arm nbeing also interposed between the table and bracket.

The edge of the table is furnished with notches 0, and the arm is provided with a pawl p, fitted to such notches, and is connected by a link 19' with the upper end of a vibrating lever m. (See Figs. 5 and 6.) This lever is pivoted at its lower end, and is oscillated by a crank-pin Z, provided at one end of the crank-shaft H, and fitted to a box Z in a slot:

in the lever m. The table, being fitted to receive twelve caster parts, is turned on equarter of a revolution by the pawl p to bring three of'such parts simultaneously under the three spindles h 0.

Three sliding dogs (1 are fitted transversely in a carrier D, adjacent to the rim of the table, and each is shaped to embrace the caster part in a wedge-shaped notch d at its forward end. The dogs are pressed normally toward the caster parts by springs (1", (shown in Fig. 10,) and are retracted when the table isintermittingl y rotated by fingers 6 upon an oscillating shaft-e beneath the holder D. Each dog is furnished with a stud e, projected toward the shaft and engaged by the finger 8' when the shaft is oscillated. Such oscillation is effected, as shown in Figs. -;t and 6, by a cam q upon the end of the shaft II, a link r. having a pin r pressed against such cam, and a lever-arm 3, attached to the end of the shaft 6 and pivoted to the link 0'. The springs d operate through the fingers e to press the link 7" normally backward and hold the pin r against the cam g. The cam is shaped to hold the dogs retracted during the feeding operation and to release them from the action of the fingers 6 when the spindles are operating upon the caster parts, so that the dogs operate automatically to grasp the caster parts when required.

The table-raising device consists in a wedge N, linked to a crank-pin 11, formed in the middle of the crank-shaft ll and reciproeated between a bearing upon the bracket 0 and an abutment upon the frame. The bearing and abutment are preferably formed as antifriction wheels, the bracket being provided with wheel 0, pivoted upon pin and the frame with a wheel N, which is pivoted in a holder N and adjusted vertically upon the frame by means of a screw and nut N The frame and bracket C are formed with an aperture U, adjacent to the crank-shaft H, to permit the passage of the link which reciprocates the wedge. The spindles are mounted upon the frame parallel with the movement of the bracket C, and the axis of the rotary table D (formed in the stud e) is also parallel with such movement, so that the reciprocation of the wedge between the rolls 0 and N moves the table to and from the ends of the spindles b c. The stroke of the table may be varied by changing the taper of the wedge N, which is shown fitted removablyupon the upper side of the link 7& which reciprocates it, and the adjustment of the wheel N (by the screw N furnishes a means of varying the action of the tools upon the parts on the table. The crank-pin 1-1, the crank-pin Z, and the cam q are adjusted to operate their connected mechanisms in the desired order, and the operation of the parts, as shown in Figs. 1, 4, and 6, is as follows:

lVhile the machine is in operation, the operator places three of the caster-frames j with their pins 9 in the holes 7a in the table D,

with the arms of the frame projected toward the center of the table, as shown in Fig. 3. The feed-pawl p, operated by crank-pin I, then turns the table with the three frames adjacent to the notches d in the dogs (1, and the cam q is then turned, as shown in Fig. l, and permits the springs d to force the dogs outward, as shown in Fig. (3, the teeth d" formed in the jaw of each dog grasping the flange g upon the pin g, and thus holding the latter from turning. As the dogs are moved by springs, they are adapted to adjust themselves automatically to collars of different sizes and to hold the same during the spinning operation. The wedge actuated by the crank-pin ll ,then raises the table, forcing the points of the pins y into contact with the spinning-whee1s g, (shown in Fig. 12,) which press down and expand the top corners of the pin and form a rivet-head j thereon,thus securing the framej movably upon the pin as desired. The cam q then retracts the dogs and the pawl 19 turns the table another quarter of a revolution, thus removing the caster-frames, which have been riveted, from beneath the tools, and carrying three other frames under the tools to be operated upon in like manner. The operator removes those frames which have been riveted in turn from the table and replaces them, three at a time, with other frames to be carried beneath the tools and riveted as before.

It is obvious that any number of spindles I) c 0 may be used simultaneously, provided their axes are arranged concentrically with the axis of the rotary table which carries the work to the tools, and it is also obvious that the table may be made to carry any desired number of the parts and present them in succession to the tools.

Figs. 2 and 3 show the modification required in the tools and table for drilling the casterwheels, Fig. 2 showing the spindles b 0, provided with drills c, and Fig. 3 showing the table formed with circular recesses adapted to retain the caster-wheels. In three of these recesses the caster-wheels b are shown with the pivot-holes drilled therein, and in three others the wheels are shown inserted ready for drilling.

To hold the wheels from turning during the drilling operation the dogs (1' may be fitted to press against the circular sides of the same or each wheel may be cast with a small lateral pin thereon, and the recesses L in the table formed with a small hole 713 in the bottom to admit such pin. The pin upon the side of the caster-wheel may be readily removed after the hole is drilled by grinding or other suitable means.

llaving thu's set forth the invention, what is claimed herein is- 1. The combination, with a frame, of a bracket movable thereon, a table rotary upon the bracket, one or more rotary spindles mounted upon the frame parallel with the movement of the bracket, and a wedge reciproeated between .a bearing on the bracket and an abutment upon the frame to press the table toward the ends of the spindles, substantially as herein set forth.

2. The combination, with a frame, of a bracket movable thereon, a table rotary upon the bracket, one or more rotary spindles mounted upon the frame parallel with the movement of the bracket, a wedge reciprocated in contact with a roller fixed upon the frame, and a roller fixed upon the bracket to press the table toward the spindles, substantially as herein set forth.

In a caster-machine, the combination, with one or more rotary spindles, and the rotary table D, havingthe caster parts arranged thereon concentrically with its axis, of the dog-holder D, one or more dogs (1, movable transversely to the holder, the spring (1 the oscillating shaft (1 and the finger e, engaged with a projection upon the dog and adapted to move the dog in opposition to the spring, as and for the purpose set forth.

v 4. In a caster-machine, the combination, with a Vertical frame having the movable bracket 0 fitted thereto and carrying the rotary table D, of the spindles b 0, having their axes arranged concentrically with the axis of the table, the crank-shaft H, the worm-wheel I, worm J, pulleys K, and belt L for rotating the same, a Wedge fitted between an abutment upon the frame and a bearing on the bracket and reciprocated by connection with the crank-shat t, feeding mechanism connected with one end of the crank-shaft for intermitt-ingly rotating the table, dogs for holding the caster parts upon the table, and mechanism connected with the opposite end of the crankshaft for reciprocating such dogs, the Whole arranged and operated substantially as herein set forth.

5. In a caster-machine, the combination, with a rotary table for conveying the caster parts in succession to a rotary spindle, of the spinning-tool consisting in the rotating shank t', and the disks 9, pivoted adjacent to one another and rotatable in opposite directions, substantially as herein set forth.

In testimony whereof we have hereunto set our hands in'the presence of twosubscribing witnesses.

ULRICH EBERI-IARDT. HENRY E. EBERHARDT. Witnesses;

THos. T. CRANE, HENRY J. MILLER. 

